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I doubt there's any date info there - the yoke is a forging, not a casting, and the Chevy bowtie emblem indicates that it was made at the Chevrolet-Detroit Forge Plant; the number next to the bowtie symbol relates to the forging die set used to produce the yoke, not a date. Forgings weren't dated, but they carried the forging number for the part.

Has there been any definitive conclusion on the drive shaft strip color coding for the 1st Gen drive shafts, specifically the '69 Z28?

The Muncie Transmission input shafts were different between the M20 versus the M21/M22 with the number of spine teeth. But were the output shaft splines the same on all three Muncies? If the output splines were different, did the draft shaft strip color codes reflect this?

Based on the related links, it appears that the orange/white stripe combination has been found on 1st Gens.

If so can you post the length from center of u joint to center of u joint. Thanks.

Yes, the drive shaft is off our 68 Z/28 and the length is 52 1/2". I found the part # on the yoke but its very difficult to read other than a couple numbers.

AMA specs for '68 state 50.46" c-c.

Thanks William! Bryon, the info I supplied was from what I believe to be a 69 Camaro auto. trans and not my 68 Z/28. What a mistake but I had the wrong drive shaft! The yoke on the one I reported on is larger and will not even fit in our M21. After William's comment I thought I better double check and yikes, screwed up on this one. Will report on the 68 Z shaft after I complete the intitial cleaning. Can tell you the yokes are offset and the length is approximately 50 1/2" in length.

Has there been any definitive conclusion on the drive shaft strip color coding for the 1st Gen drive shafts, specifically the '69 Z28?The Muncie Transmission input shafts were different between the M20 versus the M21/M22 with the number of spine teeth. But were the output shaft splines the same on all three Muncies? If the output splines were different, did the draft shaft strip color codes reflect this?Based on the related links, it appears that the orange/white stripe combination has been found on 1st Gens.Thanks!

Dave we are still working on figuring out the driveshaft paint stripes. There were differerences, but so far we have not found anything written down. So we are looking at examples at this point.

As John says, all output splines on 67-69 Muncies were the same. The large 32 spline output shaft did not start until sometime in the 1970 model year and used the 3978764 tailhousing.

Original 1968 Z28, Norwood, 07C, 50 inches (or darn close), staggered yoke alignment, orange and white stripes (13 inches from centerline of yoke to center between the two stripes), attachment looks like u-bolts that are flattened where they go around the u-joint.

Original 1968 Z28, Norwood, 07C, 50 inches (or darn close), staggered yoke alignment, orange and white stripes (13 inches from centerline of yoke to center between the two stripes), attachment looks like u-bolts that are flattened where they go around the u-joint.

Thanks for that information Jerry. I believe the 50 inches (49.96) and u-bolts are correct.

Took it out of my cleaner set up and it seemed to eye ball just under 50". Yoke ends have the staggered offset, U bolts, and beginning of orange/white stripe is just over 5" from centerline of yoke. Yoke had both orange and yellow paint on it. Plenty of orange paint on that yoke. When I flip it I will report any new findings. Some pictures:

1969-Year of carNorwood-Norwood or Los Angeles car12B-Month and week of vehicle assembly396-Engine M20-Transmission49.5-Driveshaft length (measured center of u joint to center of u joint)367-2 3790024?-Driveshaft casting numberstrap and bolts-Type of attachment to pinion yoke. There are two types: U bolts and the strap and bolts method.BS 1118 G2- Code stamped on front of passenger side axle tube.N/A-Paint stripes and a picture (if possible) in-line-Position of the u-joint flanges on each end. Some cars were "in-line" and others were "clocked" about 30 degrees off from each other